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Input numbers in 2d array and print the largest and smallest number in C

Two Dimensional Array - Question 3

In this question, we will see how to input numbers in a 3X3 integer matrix (2d array) and print the largest and smallest number from it in C programming. To know more about two dimensional array click on the two dimensional array lesson.

Q3) Write a program in C to input numbers in a 3X3 integer matrix (2d array) and print the largest and smallest number from it.

Program

#include <stdio.h>
#include <conio.h>

int main()
{
    int a[3][3], r,c,lg=0,sm=0;

    printf("Enter 9 numbers\n");
    for(r=0; r<3; r++)
    {
        for(c=0; c<3; c++)
        {
            scanf("%d",&a[r][c]);
            if(r==0 && c==0)
            {
                lg=a[r][c];
                sm=a[r][c];
            }
            else if(a[r][c]>lg)
            {
                lg=a[r][c];
            }
            else if(a[r][c]<sm)
            {
                sm=a[r][c];
            }
        }
    }
    printf("Largest number = %d\n",lg);
    printf("Smallest number = %d",sm);
    return 0;
}

Output

Enter 9 numbers
63
24
15
3
75
2
19
31
42
Largest number = 75
Smallest number = 2
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